// compile with: jsc interfacepoly.js

  interface ICopyObj {
    function Copy() : Object;
  }

  function CopyMe(ic : Object) : Object {
    return ic.Copy();
  }

  class CopyInt implements ICopyObj {
    public var i : int;
    public function CopyInt(i : int) {
      this.i = i;
    }
    public function Copy() : Object {
    return new CopyInt(i)
    }
  }

  class CopyDouble implements ICopyObj {
    public var d : double;
    public function CopyDouble(d : double) {
      this.d = d;
    }
    public function Copy() : Object {
      return new CopyDouble(d)
    }
  }

  var h1 : CopyInt = new CopyInt(8);
  var h2 : CopyInt = CopyMe(h1);
  var h3 : CopyDouble = new CopyDouble(3.2);
  var h4 : CopyDouble = CopyMe(h3);
  print("Original: " + h1.i + " Copy: " + h2.i);
  print("Original: " + h3.d + " Copy: " + h3.d);

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